Build (method = -2) #dp: 101 Step-3' Graph: 22 vertices and 66 arcs (0.00s) Step-4' Graph: 13 vertices and 48 arcs (0.00s) #V4/#V3 = 0.59 #A4/#A3 = 0.73 Ready! (0.00s) Optimize a model with 23 rows, 49 columns and 128 nonzeros Presolve removed 7 rows and 7 columns Presolve time: 0.00s Presolved: 16 rows, 42 columns, 109 nonzeros Variable types: 0 continuous, 42 integer (0 binary) Found heuristic solution: objective 840.0000000 Optimize a model with 16 rows, 42 columns and 109 nonzeros Presolved: 16 rows, 42 columns, 109 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 5.200e+01 Factor NZ : 1.360e+02 Factor Ops : 1.496e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.77597985e+03 -5.79599271e+03 4.89e+03 2.22e-16 2.96e+02 0s 1 1.03500990e+03 -1.70609357e+03 2.79e+02 5.55e-16 3.76e+01 0s 2 7.08774083e+02 -2.55080023e+01 5.44e-01 3.33e-16 8.25e+00 0s 3 5.01845319e+02 3.56180946e+02 1.34e-02 5.55e-16 1.64e+00 0s 4 4.64801117e+02 4.45875645e+02 1.05e-03 2.22e-16 2.13e-01 0s 5 4.61126287e+02 4.59874509e+02 8.13e-13 3.62e-16 1.41e-02 0s 6 4.60750204e+02 4.60749559e+02 1.24e-12 5.34e-16 7.25e-06 0s 7 4.60750000e+02 4.60750000e+02 1.14e-13 4.13e-16 7.33e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 4.60750000e+02 Root relaxation: objective 4.607500e+02, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 460.75000 0 9 840.00000 460.75000 45.1% - 0s H 0 0 461.0000000 460.75000 0.05% - 0s Explored 0 nodes (15 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 4.610000000000e+02, best bound 4.610000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 461 Solution: 21 x [9, 10] 73 x [6, 9] 1 x [7] 19 x [4, 7] 2 x [7, 10] 26 x [7, 8] 26 x [5, 7] 141 x [1, 4] 105 x [2, 10] 15 x [3, 6, 6] 32 x [5, 5, 8, 10]